A gene that controls beta-carotene production has been successfully inserted into a common food crop. Name the technique used to do this. Give the full name, not the
abbreviation.

genetic modification

Explanation:

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.